Industrial truck and attachment therefor



April 8, 1930. E. H. REMDE 1,753,729

INDUSTRIAL TRUCK AND ATTACHMENT THEREFOR Filed Aug. 20, 1925 2 Sheets-Sheet 1 I N VEN TOR.

v A TTOPNEY.

April 8, 1930. E. H. REMDE 1,753,720

INDUSTRIAL TRUCK AND ATTACHMENT THEREFOR Fi led Aug. 20, 1925 2 Sheets-Sheet 2 Patented Apr. 8, 1930 UNITED STATES.

.PATENT' OFFICE EDWARD H. IREMDE, OF CLEVELAND, OHIO, ASSIGNOR TO THE BAKED-BAULANG COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO V INDUSTRIAL TRUCK AND ATTACHMENT THEREFOR Application filed August 20, 1925. Serial No. 51,498.

This invention relates to an industrial truck and an attachment therefor capable of lifting, transporting and positioning various kinds and shapes of bodies or material and for moving or hauling bodies; more particularly the invention relates to a portable crane wherein the boom is provided with a cable attachment, whereby the body to be moved or hauled may be readily engaged and moved.

I have shown my invention as applied to the removal of superheater units, such as pipes or tubes, from the boiler fines of a locomotive; but such application is merely for illustrative purposes.

One object of the invention is to provide a. truck of this character having a boom and an attachment, whereby auxiliary operations may be readily effected in connection with the boom.

Another object of the invention is to construct a crane and to provide the boom thereof with an improved attachment, whereby the boom and attachment may be used to move bodies from inaccessible positions in a rapid manner.

Another object of the invention is to provide an improved boom having an attachment which may be positioned for engagement with and movement of bodies from tubes or other enclosures in an endwise direction, thereby avoiding damage to or binding of the bodies with the walls of the enclosures.

Other objects of the invention will be apparent to those skilled in the art to which my invention relates from the following description taken in connection with the accompanying drawings, wherein Fig. 1 is an elevation of a crane type 0 truck embodying my invention, showing the application thereof to the removal of pipes or tubes from a locomotive boiler.

' Fig. 2 is a section on the line 22 of Fig. 1.

Fig. 3 is a perspective view of the boom and the attachment therefor.

Fig. 4 is an elevation of the power unit, partly in section on the line 44 of Fig. 1.

In the drawings, 1 indicates a frame of suitable construction mounted on pairs of wheels 4, all of which are preferably steered through connections 8 by a lever 10. One pair of wheels is driven by an electric motor 6 in anywell known manner. 9 indicates the operatives platform. 11 indicates a foot pedal for controlling a brake mechanism (not 65 shown) which is normally biased to brake the motor 6. 12 indicates a controller for the motor 6 for supplying current to the latter from suitable batteries within a casing 35. 13 indicates a switch mechanism, actuated through a rod 14 to open or close the motor circuit accordingly as the pedal is released or operated.

33 indicates a pivot member disposed vertically on the frame 1 and arranged to swingably support a frame 34, which carries the batteries and a pivoted boom 40, whereby the latter may be positioned-at either side of the frame 1, such as'shown in Fig. 1.

55 indicates a member, such as a hook for engaging a load whereby it may be raised or lowered or otherwise moved. The hook 55 is suspended from the outer end of the boom 40 by a flexible member or cable 57 connected to and operated by an operating means 44. The boom 40 is raised and lowered about its pivot pin 52 by means of a flexible member or cable 40 connected to an operating means 43. p v

The operating means 43, 44, include a pair of drums 58, 59, on which the cables 40, 57, respectively, wind and unwind, for swinging the boom 40 about its pivotal support and for raising or lowering and for pulling the load engaging member 55. The drums 58, 59, are rotated independently of each other in either direction in the manner to be later set forth. The cable 40 is connected at its inner end to the drum 58 in any desired manner. From th um 8 the a le 40 leads'to and reeves through and around a plurality of sheaves 60, 61, 62, supported in suitable blocks 60, 61", 62", respectively, mounted on the boom, and frame 34, the opposite or outer end of the cable being carried down and preferably.

connected or anchored to the block 61.

The cable 57 is connected at its inner end in any suitable manner to the drum 59, from which it runs to and around a guide sheave 69, suitably supported on the adjacent side of the frame 34 and then around a. sheave 70 loosely mounted on the piv0t52. From the sheave 70 the cable 57 extends over a sheave 71, rotatably mounted on the boom, then to and around a sheave 72 mounted on a shaft 72 pear. The shaft of the motor transmits power through the worm 110 tothe main gear 111 of the differential mechanism and the latter gear transmits power to the bevel gears 117 suitably keyed to the shaft sections 118, respectively. Each shaft section is connected through a suitable gear reduction 119 to the adjacent drum 58, or 59 to rotate it in one direction'or the other to wind the adjacent cable thereon or permit unwinding therefrom according to the direction of rotation of the motor 41.

ferential'mechanism 42 with the motor 41;

Accordingly, by locking one of the driven eleanism 42,'the drum associated therewith will be held against movement and the power of the motor 41, when set in o eration, will be transmitted through the di erential mechanism, the other shaft section and the adjacent reduction caring 119 to rotate the drum connected to t e latter, so that either drum may be rotated as may be desired.

Each locking or holding means indicated at 125 is constructed to normally lock the adjacent drum or its driving means, so that both drums are normallyheld against movement. As a result of this arrangement, I provide and associate with each of the locking means 125 a releasin means (indicated as an entirety at 136) elther of which may be operated, at will, by a selective device so that the desired drum may be operated when the motor 41 is driven.

' Each locking means 125 may consist of a r disk type of clutch normally held in clutching relation by springs 134 and the releasing means 136 may consist of an electro-magnet the armature of which is acted upon by the magnet coils to release the clutch in opposition to the springs 134. The selective device 143 is arranged to connect the magnetic coil of either release means in series with the motor 41, so that upon the supply of current thereto by means of a controller 147, either drum may be driven in either direction.

The parts and elements so far described are similar to corresponding parts and elements disclosed and claimed in my copending application Serial No. 757,029, for which reason it is not necessary to fully illustrate and further describe the truck construction. No

claim is made herein to such subject-matter. 176 indicates an attachment for the boom 40 for guiding the cable 57, whereby the load engaging member 55 or such member and the .boom may be used to carry out certain auxil-.

iary operations, namely, that of moving or sliding a body along a support disposed at an angle to the vertical or mounted in casings or housing members, one such example there of bein illustrated in Fig. 1.

member ivotally supported on the boom. The mem er 17 6 preferably comprises a pair of arms pivotally supported on a shaft 177'. The shaft 177 is mounted at its opposite ends Of t e attachment 176, 176' indicates a in openings 17 7 formed in the bars 40 of the boom 40 and held against endwise movement by cotter pins 177. As shown in Fig. 2, each arm 17 6 consists of a section of angle bar and a knuckle 17 6 having an extension to which the bar is riveted. These arms may be of any desired length. At their outer ends, the arms are formed with alignedopenings to receive a shaft 178, which supports on its opposite ends sheaves 179, preferably being held thereon by cotter pins 180. The arms 17 6 preferably converge toward their free or outer ends, ments at either side of the differential mechthe purpose bein to permit (1) the mounting of the sheaves 1 9 relatively close together and on the opposite outer sides of the arms 176 and (2) the ready engagement of the cable 57 therewith and its disengagement therefrom. 181 indicate s acers, one being disposed between the arms 1 6 and the others on the outer sides thereofto revent inward movement of the sheaveson t e shaft 178.

The purpose of the attachment 176 is to provide a uide at some point along the boom 40, inwar ly of its free end, for the up and down'sections of the cable57, so that bodies or elements mounted on a supporter within a casing or structure may be engaged and moved in a direction at an angle to the vertical. The attachment 17 6 may be positioned on the boom 40 at any distance from its free end, dependent upon the height of the sup-.

port, casing or structure from which the bodms or units are to be removed. By mounting the sheaves 179 on the outer end of a swingthe cable 57 in a direction substantially coincident with the plane in which the body, which is to be removed, is movable and thus effect a pull on the body endwise thereof. In one application of the invention it may be used or engaging and removing superheat ing units from the fluesof locomotive boilers, this operation being shown in Fig. 1, wherein A indicates a portion of a locomotive, B indicates the boiler having a flue sheet I) and flues 0 leading therethrough into the smokebox D. E indicates a. superheater for the steam connected at its front end to a header, F. G indicates a plurality of superheating units onefor each flue C. Each unit may comprise a pipe having two return bends, the ends of the pipe leading out through the flue and then upwardly for connection to the header.

In operation the truck is positioned in front of the locomotive A (preferably at substantially right angles thereto) and the frame 34 slowed around to bring the boom directly in front of the locomotive; then the boom 40 is lowered to cause its front end to engage the upper front portion of the smoke-box casing or other part of the locomotive; then the sections of the cable 57 are positioned around the sheaves 179 (see Fig. 3) then the hook 55 is passed through the front wall of the smoke-box I) (its cover having been removed) and connected to one of the units or a chain a: connected thereto; then the drum 59 is operated to wind the cable 57 thereon and thus pull the unit out of its flue. If the length of the pull is not sufiicient to remove the unit, the hook is connectedthereto at another oint inwardly of its outer end and the ullmg action repeated. The position 0 the member 17 6' is preferably determined by the length of a chain 182 connected to an extension 183 depending from the intermediate spacer 181 and a cross pin 184 extending between the. boom bars 40". The chain is provided with a hook or other device 182 which may engage any oneof chain links after the chain is passed around the pin 184 to increase or decrease its length, thereby adjusting the position of the sheaves 179 at the desired point to permit pull endwise of the unit or other body. The outer end of the member 176 is thus adjustable to arrange the sheaves in a. position which will permit the cable to effect a pulling action endwise of the body to be removed.

In removing units in this manner, it will be seen (1) that the thrust or reaction due to the pull thereon is borne by the locomotive structure itself, so that the attachment cooperates with the boom in efi'ecting movement of the bodies to be moved; .and (2) there is noundue stress on the boom or its pivotal support or truck frame or any tendency to move the truck or the locomotive. Furthermore, when the truck and boom-are positioned asshown in Fig. 1, the removal of all the units is effected by; the operatiion plf e units an pu connecting the hook 55 to t ingthem out one after another. f V

hen the attachment is not in use, it is swung downwardly to a position between the bars 40 (see dotted lines in Fig. 1) and held by a rod 185 passing through an opening 186 formed in the extension 183 and engaging the rear sides of the bars 40'.

The current for the motors 6 and 41 and for the coils for the magnetic releasing means 136 is supplied from the batteries within the casing 35. I have not shown herein the circuits and connections between the batteries, the controllers, the selector switch mechanism and the motors since the same are fully disclosed in my aforesaid co-pending application.

0 those skilled in the art to which my invention relates many changes in construetion and widely differing embodiments and applications of the invention will suggest themselves without departing from the s irit and scope thereof. The disclosures an the description herein are purely illustrative and are not intended to be in any sense limiting.

What I claim is:

1. In apparatus of the class described, the combination with a frame and supporting wheels therefor, of a boom pivotally mounted on said frame, a flexible member suspended from said boom and car ing' a load engaging member, means on sai frame for operating said flexible member and means carried by the boom inwardly of its free end and arranged to engage-the'suspended 01'- tion of said flexible member when said oad engaging member is connected to a load disposedoutwardly beyond the boom, said guide comprising a swingable arm carrying a sheave wJh which said flexible member removably engages and a connection between the outer portion of said arm and a ortion of the boom therebelow for resisting t e pull of said flexible member on said arm.

2. An apparatus as claimed in claim 1 in which means are provided for raising or lowering said boom.

3. An apparatus as claimed in claim 1 in which the operating means for said flexible member is operable to hold said flexible memher and raise or lower said boom.

4. In apparatus of the class described, the combination with a frame and supporting wheels therefor, of a boom pivotally mounted. on said frame, a load engaging member, a flexible "member having a loop portion for suspending said load engaging member from said boom, an arm connected to said boom and carrying a pair of sheaves arranged to engage the legs of the loop portion of said flexible member to guide them, and a winding 

